Dental investment materials are used to encase the wax designed for the lost wax casting technique. These materials are usually available as a powder that is mixed with water and then used to encase the wax design. These materials solidify and can withstand the heat of the casting furnace to hold the precise shape left behind when the wax is burned out. Different gypsums are designed for use with different dental alloys or other materials, so be sure to select the proper gypsum for the case at hand.
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| Company | Whip Mix Corporation | Whip Mix Corporation |
| Item | Hi Temp Carbon-Free Investment | ResinVest |
| Price | Inquire | Inquire |
| Description | A special investment for non-precious and semi-precious alloys. HI-TEMP contains no carbon. Non-precious metal alloys require an investment specially | Designed for burning out printed or milled resin patterns for crowns, bridges, or frameworks, ResinVest is a fiber-reinforced material that resists |
| Quantity | 144 - 90 g Package
144 - 60 g Package
6 Pack - 340 mL Bottles
6 Pack - 1 L Bottles
340 mL Bottle
1 L Bottle | 100 g Package; 55 lbs. Carton |
| Compressive Strength | Wet - 1,500 psi (10 MPa) | 1,350 psi (9.2 MPa) |
| Working Time | 7 - 8 minutes | 6 to 8 Minutes |
| Set Time | Not Available | 30 Minutes Minimum |
| Material Type | Carbon-Free Phosphate Bonded | Phosphate Investment |
| Indication For Use | High Fusing Alloys | Burning out milled or printed resin patterns |
| Liquid / Powder Ratio | 16 mL / 100 g | 22 ml/100 g |
| Setting Expansion | 0.7 % | 1.6 Percent |
| Ready For Burnout | 60 minutes | Yes |
| Hygroscopic Expansion | N / A | Not Available |
| Thermal Expansion | 1.2 % | 0.65 Percent |
| Metal or Ringless Technique | Metal or Ringless | Both |
| Get Info | Not Available | Not Available |